<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 3.2 Final//EN">
<html>
<head>
<meta http-equiv="Content-Type" content="text/html;charset=iso-8859-1">
<title>DATABASE: Water</title>
<style type="text/css"> <!-- @import url(1_.css);   --> </style>
<link disabled rel="stylesheet" type="text/css" href="1_.css">
</head>

<body bgcolor="#ffffff" text="#000000" link="#008000" vlink="#008000" alink="#008000">
<table cellspacing="0" cellpadding="0" border="0" width="100%">
  <tr>
    <td align="center" width="50">
    <a href="DB_0_Main.htm"><img src="images/database0.gif" border="0" width="32" height="32" alt="Database"></a>&nbsp;</td>
    <td align="left"><font size="-1"><a href="DB_0_Main.htm">DATABASE</a>&nbsp;/ <a href="DB_Databases.htm">Databases</a>&nbsp;/ <a href="DB_Create_your_database.htm">Create&nbsp;databases</a>&nbsp;/ <a href="DB_logK_files.htm"><nobr>logK-files</nobr></a></font></td>
  </tr>
</table>


<h3>Water in DATABASE:</h3>

<p>The <nobr>log<i>K</i>&deg;</nobr> values in &#147;Chemical Equilibrium Diagrams&#148;
are given for infinitely diluted aqueous solutions (zero
<a href="SP_Ionic_Strength.htm">ionic strength</a>).</p>

<p>However, water <nobr>(H<sub>2</sub>O)</nobr> might be needed as a component if you wish
to model ionic medium effects, especially on systems where minerals precipitate
involving H<sub>2</sub>O, such as gypsum
<nobr>(CaSO<sub>4</sub>&#183;2H<sub>2</sub>O)</nobr>.

<p>Therefore it is recommended that
H<sub>2</sub>O is included in the database reactions.</p>

</body>
</html>